As annoying as it is, it's a useful critter.
You see, the way you react is the very cause of our current troubles: we only see the living systems as a way to please us, and only on the short term. When they don't please us, we start hating them, and find a way to bend them to our will.
Now we destroyed most of the systems, or at least their balance, and we are painfully discovering that it may dooms us all.
So let's try to adopt a different point of view before we face even more terrible consequences of our gluttonous actions.
for humans yes - which was his point. looking at this from a human perspective is a problem. there are likely unknown consequences elsewhere in the food chain if we completely eradicate a species for our own gain
Though frankly I'd be willing to risk them gone for good.
If we were being deliberate, sure, a targeted assassination of the Anopheles mosquito might not be a bad thing. But I don't get that sense at all... More like collateral damage.